Abstract
                 Background: Self-medication is the use of medical products to treat self-recognized disorders or symptoms, also  stated  as irregular or continued use of a prescribed drug for chronic or recurrent disease. It is commonly practiced among   medical students. Objective: To study the prevalence, pattern, and perceptions of self-medication practices among the undergraduate  medical students and the factors influencing them. Material and Methods: A cross-sectional study was carried out among medical students of Yenepoya Medical College,  Mangalore, Karnataka, India. Universal method of sampling was followed. MBBS students studying in all the three phases  who consented to participate in the study were included. The data were collected by using a self-structured questionnaire  and compiled in an Excel worksheet. SPSS, version 16.0, was used to analyze the data in this study. Results: A total of 430 medical students participated in the study; among them, 50.2% (n = 226) were female students  and 49.8% (n = 224) male students, with a mean age of 20.81 ± 1.52 years. Majority [378 (84%)] of them resorted to self-  medication practices.The most common reason for self–medication, which the students stated, was convenience (46.9%),  followed by cost saving (22%). The major source for selection of medicine was opinion from senior/friend (40.2%), and  major source for deciding the dosage was usage of technology [Internet (35%)]. The medicine most commonly used were  analgesics (57.3%), antipyretics (53%), antibiotics (47%), and antihistamine (33%). Conclusion: Self-medication should be considered as a serious threat especially among students with inadequate   knowledge regarding appropriate drug choice, duration of treatment doses, and side effects.